Cossor valve, type 3273, stem marked 5713, 4.5in screen, 1ft 4.5in long overall, with 3 side tubes, internal graphiting, (RMW/K49 - McVitie Weston number), by A C Cossor Limited, 1937.
Cossor valve, type 3273, stem marked 5713, 4.5in screen, 1ft 4.5in long overall, with 3 side tubes, internal graphiting, (RMW/K49 - McVitie Weston number), by A C Cossor Limited, 1937.